1. In 'The Santa Clause,' Scott Calvin makes a joke about his ex-wife’s mother-in-law’s phone number being “1-800-SPANK-ME.” Unfortunately, a few children believed this to be a phone number that would allow them to talk to Santa, only to end up calling a real phone sex line.

2. Due to his popularity, Disney made an exception to their “no ex-cons” policy in hiring Tim Allen for the role. Allen had spent just over two years in prison after being arrested for attempted drug dealing in 1978.

3. Carol Kane, playing the Ghost of Christmas Present in 'Scrooged,' pulled Bill Murray’s lip so hard during one take that she tore it and production had to be stopped for a few days to allow Murray to heal.

5. The character of Seth Goldstein in 'A Very Harold and Kumar Christmas', played by David Krumholtz, was almost not in the movie. In the film, Harold and Kumar run into Rosenberg and Goldstein and have dinner together at White Castle, but the original scene would have Harold and Kumar escape into a Chinese restaurant and run into Rosenberg, played by Eddie Kay Thomas, and his uncle Johan, who is referenced in the theatrical scene. Tristan Canning, who plays Goldstein’s son Noah in the theatrical scene, appeared in the alternate scene, but as Rosenberg’s son who has a fascination with Christmas and who Uncle Johan swears isn’t Jewish. The original scene would have referenced that Rosenberg and Goldstein haven’t been friends for awhile, mirroring Harold and Kumar’s relationship. The reason for Goldstein's absence isn't clear, but possibly had to do with Krumholtz's commitment to the television series 'Numbers,' which was still going when the script was written, but cancelled a month before the movie began filming.

6. This is the only 'Harold and Kumar' film not to have Christopher Meloni, who played Freakshow and the KKK Grand Wizard in the previous films. Meloni was originally set to play the role Sergei Katsov.

7. Rosemary Clooney was contractually prevented from singing her own part on the soundtrack for 'White Christmas,' since it was being released by a record company other than the one that represented her. Her part was dubbed over by Brenda Lee.

8. The spoof of the “Sisters” act by Bing Crosby and Danny Kaye was not in the original script. Crosby and Kay were just messing around on set one day singing the song and the director decided it was funny enough to be included in the film. The take used in the film was the best take they were able to get as both Crosby and Kaye kept cracking up during the performance.

9. Jim Carrey’s make-up in 'How the Grinch Stole Christmas' took three hours to apply, and reportedly made Carrey feel so uncomfortable and confined that he required the assistance of a Navy SEAL who taught him how to cope with and resist torture.

10. Director Ron Howard arrived on set one day at 3 a.m. to get into the full Grinch costume with makeup, directing the whole day as such. When Carrey arrived on set that day and saw Howard, he became upset because he mistook Howard for a stunt double who looked nothing like him.

11. 'Gremlins' and 'Indiana Jones and the Temple of Doom' are widely credited for the creation of the PG-13 rating, since both films were rated PG, but contained a great deal of frightening and disturbing imagery beyond their ratings, but not bad enough for R.

12. During one night of filming, there were so many problems with the Gremlins puppets that the whole cast fell asleep on set while waiting for the problems to be fixed.